Single strap backpack



FIG. 1 is a top, front, right side perspective view of the single strap backpack;

FIG. 2 front elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a back elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The dash-dash-dash broken lines shown in the drawings represent stitching lines.

The cross-hatched pattern shown in the drawings represents a textured, fabric surface.

The rectangular shapes shown on the side pocket in the drawings represents a second type of textured surface.

The circular shapes shown on the bottom surface represent a third type of textured surface. 

The ornamental design for a single strap backpack, as shown and described. 